NEC M155 User Manual page 28

DECT system configuration
28
code.
7. Repeat previous two steps until the complete
code is formed.
8. Press the Lower key for a short time.
9. Repeatedly press the Upper key for a short
time until the display shows:
10. Press the Lower key for a short time.
11. When the display shows
M155 is deregistered and can no longer be
used at the DECT system.
Deregister
Not Registered the